TCK-CPP: Account JSON-RPC Endpoints

[gsstoykov]

Problem

In order to have full TCK specification validation. Developers must implement endpoints for all the Hedera defined transactions and queries. This epic lists all the needed endpoints for Account specific validation. We should also introduce a holder class for all Account specific endpoints so the code in the sdkClient doesn't scale up to be hard to maintain.

Solution

Implement specified endpoints and a holder class for them.

### Holder Class
- [ ] https://github.com/hiero-ledger/hiero-sdk-cpp/issues/671

### Endpoints
- [ ] https://github.com/hashgraph/hedera-sdk-cpp/issues/665
- [ ] https://github.com/hashgraph/hedera-sdk-cpp/issues/666
- [ ] https://github.com/hashgraph/hedera-sdk-cpp/issues/667
- [ ] https://github.com/hashgraph/hedera-sdk-cpp/issues/668
- [ ] https://github.com/hashgraph/hedera-sdk-cpp/issues/669
- [ ] https://github.com/hashgraph/hedera-sdk-cpp/issues/670
- [x] https://github.com/hashgraph/hedera-sdk-cpp/issues/695